/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:09:12,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:09:12,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:09:13,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:09:13,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:09:13,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:09:13,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:09:13,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:09:13,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:09:13,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:09:13,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:09:13,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:09:13,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:09:13,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:09:13,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:09:13,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:09:13,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:09:13,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:09:13,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:09:13,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:09:13,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:09:13,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:09:13,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:09:13,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:09:13,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:09:13,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:09:13,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:09:13,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:09:13,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:09:13,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:09:13,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:09:13,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:09:13,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:09:13,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:09:13,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:09:13,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:09:13,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:09:13,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:09:13,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:09:13,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:09:13,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:09:13,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 20:09:13,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:09:13,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:09:13,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:09:13,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:09:13,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:09:13,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:09:13,092 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:09:13,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:09:13,092 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:09:13,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:09:13,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:09:13,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:09:13,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:09:13,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:09:13,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:09:13,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:09:13,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:09:13,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:09:13,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:09:13,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:09:13,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:09:13,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:09:13,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:09:13,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:09:13,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:09:13,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:09:13,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:09:13,406 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:09:13,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2022-12-05 20:09:14,386 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:09:14,646 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:09:14,650 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2022-12-05 20:09:14,658 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965f5ff5b/6ef55f3a640e42f7b330fb65a18090e2/FLAG3a005c79d [2022-12-05 20:09:14,666 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965f5ff5b/6ef55f3a640e42f7b330fb65a18090e2 [2022-12-05 20:09:14,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:09:14,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:09:14,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:09:14,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:09:14,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:09:14,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:09:14" (1/1) ... [2022-12-05 20:09:14,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e918245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:14, skipping insertion in model container [2022-12-05 20:09:14,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:09:14" (1/1) ... [2022-12-05 20:09:14,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:09:14,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:09:14,966 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2022-12-05 20:09:14,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:09:14,979 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:09:15,007 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2022-12-05 20:09:15,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:09:15,053 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:09:15,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15 WrapperNode [2022-12-05 20:09:15,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:09:15,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:09:15,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:09:15,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:09:15,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,108 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-12-05 20:09:15,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:09:15,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:09:15,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:09:15,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:09:15,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:09:15,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:09:15,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:09:15,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:09:15,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (1/1) ... [2022-12-05 20:09:15,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:09:15,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:09:15,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 20:09:15,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 20:09:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 20:09:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 20:09:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 20:09:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:09:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:09:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:09:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:09:15,206 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:09:15,291 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:09:15,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:09:15,495 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:09:15,499 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:09:15,500 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:09:15,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:09:15 BoogieIcfgContainer [2022-12-05 20:09:15,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:09:15,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:09:15,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:09:15,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:09:15,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:09:14" (1/3) ... [2022-12-05 20:09:15,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64089404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:09:15, skipping insertion in model container [2022-12-05 20:09:15,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:09:15" (2/3) ... [2022-12-05 20:09:15,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64089404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:09:15, skipping insertion in model container [2022-12-05 20:09:15,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:09:15" (3/3) ... [2022-12-05 20:09:15,528 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-12-05 20:09:15,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:09:15,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:09:15,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:09:15,605 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 20:09:15,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 87 transitions, 198 flow [2022-12-05 20:09:15,657 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-12-05 20:09:15,657 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 20:09:15,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 1/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-05 20:09:15,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 87 transitions, 198 flow [2022-12-05 20:09:15,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 67 transitions, 149 flow [2022-12-05 20:09:15,666 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:09:15,676 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 67 transitions, 149 flow [2022-12-05 20:09:15,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 67 transitions, 149 flow [2022-12-05 20:09:15,705 INFO L130 PetriNetUnfolder]: 0/67 cut-off events. [2022-12-05 20:09:15,705 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:09:15,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 67 events. 0/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-05 20:09:15,707 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 67 transitions, 149 flow [2022-12-05 20:09:15,707 INFO L188 LiptonReduction]: Number of co-enabled transitions 814 [2022-12-05 20:09:17,958 INFO L203 LiptonReduction]: Total number of compositions: 47 [2022-12-05 20:09:17,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:09:17,982 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@372ce5e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:09:17,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 20:09:17,986 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-12-05 20:09:17,986 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:09:17,986 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:09:17,987 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:09:17,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:09:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:09:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1467362048, now seen corresponding path program 1 times [2022-12-05 20:09:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:09:18,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027243849] [2022-12-05 20:09:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:09:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:09:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:09:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:09:18,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:09:18,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027243849] [2022-12-05 20:09:18,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027243849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:09:18,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:09:18,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:09:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906885436] [2022-12-05 20:09:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:09:18,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:09:18,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:09:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:09:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:09:18,204 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 22 [2022-12-05 20:09:18,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:09:18,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 22 [2022-12-05 20:09:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:09:18,281 INFO L130 PetriNetUnfolder]: 285/477 cut-off events. [2022-12-05 20:09:18,281 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-05 20:09:18,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 477 events. 285/477 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1695 event pairs, 103 based on Foata normal form. 12/489 useless extension candidates. Maximal degree in co-relation 861. Up to 385 conditions per place. [2022-12-05 20:09:18,285 INFO L137 encePairwiseOnDemand]: 18/22 looper letters, 28 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2022-12-05 20:09:18,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 149 flow [2022-12-05 20:09:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:09:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:09:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2022-12-05 20:09:18,293 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2022-12-05 20:09:18,294 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 59 flow. Second operand 3 states and 38 transitions. [2022-12-05 20:09:18,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 149 flow [2022-12-05 20:09:18,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 137 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 20:09:18,297 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2022-12-05 20:09:18,299 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-12-05 20:09:18,301 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2022-12-05 20:09:18,301 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2022-12-05 20:09:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,301 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:09:18,301 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:09:18,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:09:18,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:09:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:09:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash 946169125, now seen corresponding path program 1 times [2022-12-05 20:09:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:09:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004054863] [2022-12-05 20:09:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:09:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:09:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:09:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:09:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:09:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004054863] [2022-12-05 20:09:18,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004054863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:09:18,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:09:18,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:09:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742196479] [2022-12-05 20:09:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:09:18,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:09:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:09:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:09:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:09:18,418 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2022-12-05 20:09:18,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:09:18,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2022-12-05 20:09:18,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:09:18,461 INFO L130 PetriNetUnfolder]: 68/174 cut-off events. [2022-12-05 20:09:18,461 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-05 20:09:18,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 174 events. 68/174 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 656 event pairs, 13 based on Foata normal form. 52/226 useless extension candidates. Maximal degree in co-relation 185. Up to 117 conditions per place. [2022-12-05 20:09:18,462 INFO L137 encePairwiseOnDemand]: 17/22 looper letters, 24 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2022-12-05 20:09:18,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 150 flow [2022-12-05 20:09:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:09:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:09:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2022-12-05 20:09:18,463 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2022-12-05 20:09:18,463 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 3 states and 40 transitions. [2022-12-05 20:09:18,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 150 flow [2022-12-05 20:09:18,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:09:18,465 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 76 flow [2022-12-05 20:09:18,465 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-05 20:09:18,465 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2022-12-05 20:09:18,465 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 76 flow [2022-12-05 20:09:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,466 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:09:18,466 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:09:18,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:09:18,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:09:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:09:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash -626630711, now seen corresponding path program 1 times [2022-12-05 20:09:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:09:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165145902] [2022-12-05 20:09:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:09:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:09:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:09:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:09:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:09:18,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165145902] [2022-12-05 20:09:18,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165145902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:09:18,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:09:18,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:09:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332433774] [2022-12-05 20:09:18,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:09:18,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:09:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:09:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:09:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:09:18,541 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 22 [2022-12-05 20:09:18,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:09:18,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 22 [2022-12-05 20:09:18,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:09:18,613 INFO L130 PetriNetUnfolder]: 75/179 cut-off events. [2022-12-05 20:09:18,613 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-05 20:09:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 179 events. 75/179 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 566 event pairs, 32 based on Foata normal form. 2/181 useless extension candidates. Maximal degree in co-relation 173. Up to 107 conditions per place. [2022-12-05 20:09:18,614 INFO L137 encePairwiseOnDemand]: 18/22 looper letters, 30 selfloop transitions, 4 changer transitions 2/38 dead transitions. [2022-12-05 20:09:18,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 191 flow [2022-12-05 20:09:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:09:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:09:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-05 20:09:18,617 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2022-12-05 20:09:18,617 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 76 flow. Second operand 4 states and 45 transitions. [2022-12-05 20:09:18,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 191 flow [2022-12-05 20:09:18,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:09:18,618 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 83 flow [2022-12-05 20:09:18,619 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-05 20:09:18,619 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2022-12-05 20:09:18,619 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 83 flow [2022-12-05 20:09:18,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,619 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:09:18,619 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:09:18,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:09:18,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:09:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:09:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1728065004, now seen corresponding path program 1 times [2022-12-05 20:09:18,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:09:18,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176604977] [2022-12-05 20:09:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:09:18,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:09:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:09:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:09:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:09:18,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176604977] [2022-12-05 20:09:18,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176604977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:09:18,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:09:18,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:09:18,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452056599] [2022-12-05 20:09:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:09:18,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:09:18,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:09:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:09:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:09:18,713 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 22 [2022-12-05 20:09:18,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:09:18,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 22 [2022-12-05 20:09:18,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:09:18,785 INFO L130 PetriNetUnfolder]: 72/172 cut-off events. [2022-12-05 20:09:18,786 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-12-05 20:09:18,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 172 events. 72/172 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 550 event pairs, 17 based on Foata normal form. 4/176 useless extension candidates. Maximal degree in co-relation 291. Up to 89 conditions per place. [2022-12-05 20:09:18,790 INFO L137 encePairwiseOnDemand]: 16/22 looper letters, 40 selfloop transitions, 6 changer transitions 2/50 dead transitions. [2022-12-05 20:09:18,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 248 flow [2022-12-05 20:09:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 20:09:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 20:09:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2022-12-05 20:09:18,793 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2022-12-05 20:09:18,793 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 83 flow. Second operand 6 states and 61 transitions. [2022-12-05 20:09:18,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 248 flow [2022-12-05 20:09:18,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 20:09:18,797 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 105 flow [2022-12-05 20:09:18,797 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2022-12-05 20:09:18,798 INFO L294 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2022-12-05 20:09:18,798 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 105 flow [2022-12-05 20:09:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:09:18,798 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:09:18,798 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:09:18,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:09:18,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 20:09:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:09:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash -941616139, now seen corresponding path program 1 times [2022-12-05 20:09:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:09:18,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783182463] [2022-12-05 20:09:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:09:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:09:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:09:18,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-05 20:09:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:09:18,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-05 20:09:18,853 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-05 20:09:18,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-05 20:09:18,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-05 20:09:18,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-05 20:09:18,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-05 20:09:18,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-05 20:09:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:09:18,862 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-05 20:09:18,866 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:09:18,866 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:09:18,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:09:18 BasicIcfg [2022-12-05 20:09:18,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:09:18,903 INFO L158 Benchmark]: Toolchain (without parser) took 4234.32ms. Allocated memory was 200.3MB in the beginning and 241.2MB in the end (delta: 40.9MB). Free memory was 175.7MB in the beginning and 188.6MB in the end (delta: -12.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-12-05 20:09:18,903 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 127.9MB. Free memory was 106.1MB in the beginning and 106.0MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:09:18,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.45ms. Allocated memory is still 200.3MB. Free memory was 175.4MB in the beginning and 156.1MB in the end (delta: 19.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 20:09:18,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.34ms. Allocated memory is still 200.3MB. Free memory was 156.1MB in the beginning and 154.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:09:18,909 INFO L158 Benchmark]: Boogie Preprocessor took 15.26ms. Allocated memory is still 200.3MB. Free memory was 154.1MB in the beginning and 152.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:09:18,909 INFO L158 Benchmark]: RCFGBuilder took 376.64ms. Allocated memory is still 200.3MB. Free memory was 152.4MB in the beginning and 172.5MB in the end (delta: -20.1MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-12-05 20:09:18,909 INFO L158 Benchmark]: TraceAbstraction took 3378.89ms. Allocated memory was 200.3MB in the beginning and 241.2MB in the end (delta: 40.9MB). Free memory was 171.5MB in the beginning and 188.6MB in the end (delta: -17.1MB). Peak memory consumption was 24.3MB. Max. memory is 8.0GB. [2022-12-05 20:09:18,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 127.9MB. Free memory was 106.1MB in the beginning and 106.0MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 384.45ms. Allocated memory is still 200.3MB. Free memory was 175.4MB in the beginning and 156.1MB in the end (delta: 19.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.34ms. Allocated memory is still 200.3MB. Free memory was 156.1MB in the beginning and 154.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.26ms. Allocated memory is still 200.3MB. Free memory was 154.1MB in the beginning and 152.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 376.64ms. Allocated memory is still 200.3MB. Free memory was 152.4MB in the beginning and 172.5MB in the end (delta: -20.1MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * TraceAbstraction took 3378.89ms. Allocated memory was 200.3MB in the beginning and 241.2MB in the end (delta: 40.9MB). Free memory was 171.5MB in the beginning and 188.6MB in the end (delta: -17.1MB). Peak memory consumption was 24.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 77 PlacesBefore, 32 PlacesAfterwards, 67 TransitionsBefore, 22 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 24 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 537, independent: 507, independent conditional: 507, independent unconditional: 0, dependent: 30, dependent conditional: 30, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 537, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 537, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 537, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 483, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 483, independent: 452, independent conditional: 0, independent unconditional: 452, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 537, independent: 46, independent conditional: 0, independent unconditional: 46, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 483, unknown conditional: 0, unknown unconditional: 483] , Statistics on independence cache: Total cache size (in pairs): 635, Positive cache size: 613, Positive conditional cache size: 0, Positive unconditional cache size: 613, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}, t3={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, pthread_mutex_lock(&mutex)=0, t1={6:0}, t2={5:0}, t3={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, pthread_mutex_lock(&mutex)=0, t1={6:0}, t2={5:0}, t3={7:0}] [L707] 1 data++ [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 203 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 2 mSDtfsCounter, 203 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-05 20:09:18,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...